Collapsible door



May 20 1924.

J. c. WORKING COLLAPSIBLE DOOR Filed .Oct. '31 192] 2 Sheets-Sheet 2 5] wvdntoz Patented May 20, 1924.

UNITED STATES V 1,495,137 P TENT O FICE- JOHN 0. WORKING, or BAKERSFIELD, CALIFORNIA, ASSIGNOR To. WoRKiNG METAL noon COMPANY, or LOS ANGELES, CALIFORNIA, A CORPORATION or CALIFORNIA.

coLLArsIBLE noon.

Application filed oet'ober'aniea'l. Serial Nd, 511,620.

To all whom it may concern:

Be it known that I, JOHN G. WORKING, a citizen of the United States, residing at Bakersfield, in the county of Kern and State of California, have invented certain new and useful Improvements in Collapsible Doors, of which the following is a specification, reference being had to the accompanying drawings. I

Broadly speaking, as the prior art will show, collapsible doors have heretofore been produced, but there are none that are practical, eflicient, and at the same time simple enough to Warrant their application to garages, warehouses and the like, namely to close door or window openings, or to act as partitions.

Therefore, it isthe purpose of the present invention .to provide a sheet metal multiple section collapsible door, adapted to be so mounted in suitable and proper guides at the top and bottom of the door opening, in order to entirely closethe opening, without leaving an opening at the top.

Doors of this general character which have heretofore been produced, have their sections operated by lazytong bars, but it has been found that the connections between these bars and the sections are not of such character as to warrant a practical construction, suflicient to insure a fire and storm proof closure.

Therefore another purpose is to provide a door of this character, wherein the sections are hingedly'connected throughout their entire adjacent edges, to insure a practical 'fire and storm'proof closure, the lazytong bars including an improved pivotal connection between the pivotally united centers of the bars and alternate hinged edges of'the "sections, so that when the lazytong bars are operated, the sections of thedoor maybecome extended or collapsed.

Also heretofore lazytong bars have been connected to door sections, which consist .of a plurality of strips, with inside and outside pliable material or fabric, enclosing the lazytong bars, which are connected to the strips, the pliable or flexible material, such as fabric becomes folded or stretched as the door opens.

The present invention aims to obviate such pliable or flexible material, and in lieu thereof toemploy a'multiple of relatively narrow door strips,hinged togetherthroughout their entire adjacent edges, and so mounted, whereby thestrips, when collapsed, extend inwardly of the door opening, thereby precluding the weather, in case the door is only partly opened orpa'mtly-collapsed. It is true that thisprinciple is involved in collapsible doorsheretofore provided, but this principle is only used, wherein' the sectionsvare actually in the form" of individual doors, but which are not actuated by lazytong bars as in the present inven: tion.

Therefore, for the above reasons, a still further purpose is to provide a practical, efiicient and very simply constructed collapsible fire and storm proof door, which may be easily and quickly opened and closed, and particularly adapted for garages and large warehouses;

A still further purpose is the. provision o a door of this character, wherein the upper and lower ends of the hinge pins which connect the entire longitudinal edges of the door sections have'anti-frictional rollers, engaging guides" at the topand bottom of the door opening, in order to insure an easier and quicker operation of-the door.

While the design and construction at present illustrated and set forth are deemed preferable, it is obvious that as a' resultof a reduction of the invention to a more pracsible door as applied;

Figure 2 is a horizontal sectional view on line 2 2fof Figure 1,, longitudinally through the upper guide, showing the rollers on the upper ends of the hinge pins which connect the longitudinal edges of the sections,

Figure 3 is a horizontal sectional View on line 33 of Figure 1 at a point'where the laz'ytongbars are connected to the door sections, thereby showing the constructionof saidpartsj' '1 I F igure Lisa vertical sectional'view on line i -4 of Figure 1, showing the connections between the lazytong bars;

1 Figure 5 is a sectional view on line 55 Figure 6 is an enlarged detail view of the connections between the centers of the lazy tong bars and the hinge edges of the sections.

Referring to the drawings, 1 designates the door opening, atthe top and bottom of which guides: 2 and I 3 are, arranged.

Mounted inthe dooropening 1 is a pair of extensible andcollapsible doors 4. While there are twog doors disclosed, it is obvious that only one maybe used. Each door comprises aplurality of sheet metal sections 5 relatively narrowrand hingedly united along theirvertical edges as shown at 6. In fact the hinges extend the entire length of the sections, in theiforni of piano hinges, and

the upper and lower ends of the hinge pins I haveanti-frictional rollers 7 and 8, engaging inthe guides 2 and 3. In fact the extreme lower endsof the hinge pins have rollersS),

which ride. UPOILtllQbOttOHlS of the lower 7 guide, thereby supporting the doors in their opening and closing: movements, The remote end sections of the doors are hingedly connectedby piano. hinges 10.- to, the angle 'ironjambs o-f the door opening, the flanges 11 of the jambs 12 "arebroad enough to overhe the sections ofthedoors when collapsed, in order te -protect;themirom the vehicles when passingiu and out ,of the garage. The adjacent end; sections I of both doors are hingedly, united ,by pianohinges 13 to angle strips 1 1,.the flanges. 15 of which suiiiciently overlie the sections of the door, when collapse, a plurality of lazytong bars 16 con-V nect between the adjacent angle strips of the doors, and the remote .jamb angle-strips,

' and where the lazytong bars are connected tothese angle'strips, the pivotal connections are designated by the numerals 18 and 19. The lazytong bars have their remote ends pivotally united-asat 20, while their centers are pivotally connected as at 21,. ,The pivot pins 21 have certain of their ends swaged or headed, to prevent movement of the pivot pins in onedirection, while their other ends .terminate in rings 22,, through which the hinge pins of alternate hinges of the door! sections pass,vthereby pivotally connecting the door sections to the lazytong bars. The

pivot pins .ronnecting the lazytong bars are mounted in suitable bushings, so as to insure ease and quick movements of'the lazytong bars, when opening andclosing'the doors. While the drawing shows the doors operated to open-and collapse in horizontal directions, it is obvious that the doors may be disposed so as to open and collapse in vertical direc tions. 7

The invention having been set forth, what is claimed is '1. In an extensible 'andcollapsible door, the, combination with a structure having-a door opening, and guides at the top and bottom of the opening, of an extensible and collapsible door comprising a plurality of door sections mounted in the opening, means hingedly uniting the longitudinal edges of the sections throughout their entire length, the upper and lower ends of the hinge pins of every other hinge means having mount-'- ings to engage said guide's, wherebythe sections of the door may extend inwardly of the door opening when the sections are collapsed.

2. In an extensible andcollapsible door, the combination with a structure having a door opening, andguides at the top and bottom of. the. opening, of an 'extensible and collapsible door comprising a plurality of door; sections mounted in the opening, and

connections including hinge pins uniting the longitudinal adjacent edges of the sections "throughout their entirelength, the upper and lower ends of the hinge pins of every other hinge connection having mountings to engage said guides, whereby the sections of the door, may eXtend inwardly of the door opening-when the sections are collapsed, and

means operatively connecting the sections,

whereby theymay'be extended or collapsed in unison during the opening, andclosing movement of thedoor.

3. In an extensible and collapsible door,

thecombination with astructure having a door opening and; guides at the top and bottom of the opening, of an extensible and collapsible door comprising a plurality of door sections mounted in the opening,1hinge connections including hinge pins and 'unit- 7 ingthe longitudinal adjalcentedgesj of the T1125 sections throughout their entire length, the

upper and lower ends of the hinge pins of every other hinge connection havingmountingsto engage saidfguides, whereby thefsections of the door may extend inwardly of the door opening when thesections are collapsed, and a ,plurality of lazytong bars 7 connecting, the end, sections of the" door and having their pivoted. centers operatively J 1 connected to every other hinge ,joint of the sections, whereby I the sections of, the, r'dOOI I may ;be, extended, andrcollapsedein unison 7 when the-door opens. and closes.

kvIn an extensible and'collapsibledoor,

the combination with a structure having a .door opening and guides at the top and bottom of the opening, of an extensible and collapsible door comprising a plurality of door sections mounted in the opening, hinge connections including hinge pins and uniting the longitudinal adjacent'edges of the sections throughout their entire length, the upper and lower ends of the hinge pins of every other hinge connection having mountings to engage said guides, whereby the sections of the door may extend inwardly of the door opening when the sections are collapsed, a plurality of lazyton bars connecting the end sections of the oor, and pivot pins connecting the centers of the lazytong bars, said pivot pins having eyes through which the hinge pins of every other hlnge connection between the sections engage, whereby the sections may collapse in unison.

5. In an extensible and collapsible door, a structure having a door opening, guides at the top and bottom of said opening, an extensible and collapsible door mounted in the opening, said door comprising a plurality of sections, hinge connections uniting the sections along their entire adjacent edges and including hinge pins, means connected to every other hinge connection between the sections at the top and bottom of the door and engaging the guides so as to hold the door mounted in the opening, a series of lazytong bars connecting the end sections of the door, pivot pins connecting the centers of said lazytong bars, said pivot pins having eyes at certain of their ends to recelve the hinge pins between every other connection between the door sections, whereby the extensible and collapsible door mounted in guides thereof, said door-r comprising a plurality of sections, hinge connections including hinge pins and uniting said sections along their entire adjacent edges, lazytong bars connecting the end sections of the door, pins pivotally connecting the centers of the lazytong bars, said pins having certain of their ends provided with means operatively receiving the hinge pins of every other hinge connection between the door sections, whereby the door sections may extend and collapse in unison and extend inwardly of the door opening when collapsed. 7 The combination with a structure having a door opening, and guidesat the top and bottomrof the opening, of an extensible and collapsible, door mounted in said opening and provided with means engaging said guides, said door comprising a plurality of sections, hinge connections uniting the door sections along their entire adjacent edges, said hingeconnections including hinge pins, a series of lazytong bars. connecting the end sections of the door, pivot pins connecting the centers of said lazytong bars and provided with circular eyes at their inner ends,

the hinge pins of said hinge connections between the sections passing vertically through said eyes, whereby the door sections may move inwardly when collapsed. V

In testimony whereof I hereunto aflix my signature.

JOHN C. WORKING. 

